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OL28X

TM 

INTRODUCTION

Congratulations on purchasing the OL28X™ an auto levelling optical dumpy 

level ideal for general site levelling, alignment and surveying.

The OL28X™ features superior optics and lenses making the image crisp 

and clear and the generous 28x magnification is ideal for accurately reading 

staffs without making the field of view too narrow.

The OL28X™ is built tough with a cast metal body which offers protection 

from dust and water.

The OL28X™ is simple to use.  Use the rough levelling bullseye vial to get the 

unit into self levelling range and the magnetically dampened compensator 

does the rest.

The OL28X™ features a rubber anti-glare sun screen for the eyepiece 

making use during tricky sun positions much more comfortable.

The OL28X™ is a truly professional tool, designed to be used day in and day 

out and built with quality materials, its tough and comes with a Two Year 

Redback Warranty. (See page 12)

www.redbacklasers.com.au

OL28X™ Included Accessories

• 

OL28X™ Dumpy Level

• 

Protective Carry Case

• 

Protective Lens Cap

• 

Plumb Bob

• 

Lens Cleaning Cloth

• 

Instruction Manual

Summary of Contents for ol28x

Page 1: ......

Page 2: ...n 9 Calibration Self Check Technical Specifications 10 Care Maintenance Trouble Shooting 11 Warranty 12 2 Copyright CMI LasersTM RedBack lasersTM and Level1LasersTM All rights reserved CMI Industries...

Page 3: ...and water The OL28X is simple to use Use the rough levelling bullseye vial to get the unit into self levelling range and the magnetically dampened compensator does the rest The OL28X features a rubber...

Page 4: ...l Dumpy Unit 1 Lens Cover 2 Focus 3 Rubber Eypeice Sheild 4 Eyepiece Cross Hair Focus 5 Angle Estimator 6 Levelling Feet 7 Fine rotation Adjustment www redbacklasers com au Rough Levelling Vial OL28X...

Page 5: ...Line View through OL28X Bottom Stadia Line Bubble Vial is roughly levelled using adjustment feet The bubble ONLY NEEDS TO BE SOMEWHERE IN THE CIRCLE for the dumpy level to self level Getting the bubb...

Page 6: ...gh level of accuracy Next the front of the dumpy level needs to be pointed at the required target staff This is achieved with the help of the sight built into the top housing Rotate the complete level...

Page 7: ...you can set the same height and so have a level site Vertical Alignment with the OL28X The OL28X can be used for vertical alignment such as fence post alignment This is simply acheived by placing the...

Page 8: ...f the tripod the exact position of the dumpy level can be marked on the ground Next set the staff up at the point that you want to estimate the distance to and look through the eyepiece Note the numbe...

Page 9: ...he OL28X can be used to estimate angles with the use of the angle finder scale Simply aim the dumpy level at the target point using the cross hair and zero off the angle finder scale by rotating the a...

Page 10: ...calibration certified sticker with the date and name of technician is located on the laser level itself It is worth checking calibration from time to time particularly after any known knocks or drops...

Page 11: ...e a cross hair through eyepiece A The cross hair needs focusing for your eye sight by rotating the adjustment ring on the eyepiece itself Q The Bubble Vial does not stay exactly central when I rotate...

Page 12: ...ibration during the warranty period Note that this offer is invalid if the unit shows signs of accidental damage un authorised repair or abnormal use Also note that when returning the unit to us for f...

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